Now, Sony users have a native E-mount for the A7 series, as well as other E-mount cameras. However, due to the fact that the identical optics are used for the Sony version, the lenses are substantially larger to accomodate the flange distance for the Sony camera.

Above, the Sigma 24mm f/1.4 Art lens is shown in Sony (left) and Nikon (right) mounts. Essentially, this is the same barrel length increase as using the adapter on the EF-mount lenses. [Read more…]

Sigma is really hitting it out of the park lately. The initial line of new lenses – particularly its Art lenses – are simply stunning as both engineering feats and in terms of what we have seen and heard of their real world results.